Diamond



FIG. 1 is a top plan view of this invention;

FIG. 2 is a front elevation view of this invention, no rear elevation view is presented as it is the mirror image of FIG. 2;

FIG. 3 is a right side elevation view of this invention, no left side elevation view is presented as it is the mirror image of FIG. 3; and,

FIG. 4 is a bottom plan view of this invention. 

The ornamental design for a diamond, shown and described in the drawings. 